Supposedly, ElevenClock gets the time from your computer. There doesn't seem to be any alternative.
https://www.techno360.in/elevenclock/ Or maybe it gives you another place to look for the answer.
There is a good tutorial on sevenforums (yes it works in 10 and 11) that may help.
https://www.sevenforums.com/tutorials/187346-robocopy-create-backup-script.html
Also Microsoft's Robocopy Syntax can be found here robocopy
I assume you have a B550 motherboard. You should have a BIOS setting to enable TPM. I have an Asus board, so am not sure where to tell you to look. Mine is under Advanced settings.